Reference | H6KMQU4K (70)

Two different management conditions were evaluated: commercial farm conditions (CFC, house 1) and improved farm conditions (IFC, house 2). In house 1 (CFC) animals were kept at 33 kg/m2 density and non-optimal parameters of ventilation were applied (allowing a maximum concentration of ammonia of 20 ppm), while in house 2 (IFC) chicks were kept at 17 kg/m2 density and ventilation was provided within the optimal parameters (allowing a maximum concentration of ammonia of 10 ppm). Ammonia concentration was continuously measured from the air, using a Exafan climatic sensor DOL 53, installed near the outlet to obtain representative values of the room concentrations. Moreover, both houses were equipped with programmable electrical lights, automated electric heating and forced ventilation.

A total of 1062 day-old chicks (Ross®) (males and females) were housed in two identical poultry houses (531 animals in each house). Within each of the houses, 204 animals Animals 2021, 11, 1005 3 of 11 were located in 12 pens and the rest of them (327) were on the floor out of the pens, all with wood shavings as bedding material.

AST Method: Agar Dilution

Reference explicitly reports AST breakpoints: None

Reference reports using a MIC table: None